Optical element for assay device



FIG. 1 is a top, left side perspective view of an optical element for assay device;

FIG. 2 is a bottom, left side perspective view of the OPTICAL element for assay device shown in FIG. 1;

FIG. 3 is a front elevational view of the optical element for assay device shown in FIG. 1, the rear being a minor image thereof;

FIG. 4 is a left side elevational view of the optical element for assay device shown in FIG. 1, the right side being a mirror image thereof;

FIG. 5 is a top plan view of the optical element for assay device shown in FIG. 1; and,

FIG. 6 is a bottom plan view of the optical element for assay device shown in FIG. 1. 

CLAIM The ornamental design for an optical element for assay device, as shown and described. 